Commit | Line | Data |
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5abb9efa | 1 | /* interp.c -- Simulator for Motorola 68HC11/68HC12 |
618f726f | 2 | Copyright (C) 1999-2016 Free Software Foundation, Inc. |
63f36def | 3 | Written by Stephane Carrez (stcarrez@nerim.fr) |
e0709f50 AC |
4 | |
5 | This file is part of GDB, the GNU debugger. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
4744ac1b JB |
9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
e0709f50 AC |
11 | |
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
4744ac1b JB |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
e0709f50 AC |
19 | |
20 | #include "sim-main.h" | |
21 | #include "sim-assert.h" | |
22 | #include "sim-hw.h" | |
23 | #include "sim-options.h" | |
24 | #include "hw-tree.h" | |
25 | #include "hw-device.h" | |
26 | #include "hw-ports.h" | |
77342e5e | 27 | #include "elf32-m68hc1x.h" |
e0709f50 AC |
28 | |
29 | #ifndef MONITOR_BASE | |
30 | # define MONITOR_BASE (0x0C000) | |
31 | # define MONITOR_SIZE (0x04000) | |
32 | #endif | |
33 | ||
34 | static void sim_get_info (SIM_DESC sd, char *cmd); | |
35 | ||
e0709f50 AC |
36 | struct sim_info_list |
37 | { | |
38 | const char *name; | |
39 | const char *device; | |
40 | }; | |
41 | ||
81e09ed8 | 42 | struct sim_info_list dev_list_68hc11[] = { |
e0709f50 AC |
43 | {"cpu", "/m68hc11"}, |
44 | {"timer", "/m68hc11/m68hc11tim"}, | |
45 | {"sio", "/m68hc11/m68hc11sio"}, | |
46 | {"spi", "/m68hc11/m68hc11spi"}, | |
47 | {"eeprom", "/m68hc11/m68hc11eepr"}, | |
48 | {0, 0} | |
49 | }; | |
50 | ||
81e09ed8 SC |
51 | struct sim_info_list dev_list_68hc12[] = { |
52 | {"cpu", "/m68hc12"}, | |
53 | {"timer", "/m68hc12/m68hc12tim"}, | |
54 | {"sio", "/m68hc12/m68hc12sio"}, | |
55 | {"spi", "/m68hc12/m68hc12spi"}, | |
56 | {"eeprom", "/m68hc12/m68hc12eepr"}, | |
57 | {0, 0} | |
58 | }; | |
59 | ||
60 | /* Cover function of sim_state_free to free the cpu buffers as well. */ | |
61 | ||
62 | static void | |
63 | free_state (SIM_DESC sd) | |
64 | { | |
65 | if (STATE_MODULES (sd) != NULL) | |
66 | sim_module_uninstall (sd); | |
67 | ||
68 | sim_state_free (sd); | |
69 | } | |
70 | ||
e0709f50 AC |
71 | /* Give some information about the simulator. */ |
72 | static void | |
73 | sim_get_info (SIM_DESC sd, char *cmd) | |
74 | { | |
75 | sim_cpu *cpu; | |
76 | ||
81e09ed8 | 77 | cpu = STATE_CPU (sd, 0); |
e0709f50 AC |
78 | if (cmd != 0 && (cmd[0] == ' ' || cmd[0] == '-')) |
79 | { | |
80 | int i; | |
81 | struct hw *hw_dev; | |
81e09ed8 SC |
82 | struct sim_info_list *dev_list; |
83 | const struct bfd_arch_info *arch; | |
84 | ||
85 | arch = STATE_ARCHITECTURE (sd); | |
e0709f50 AC |
86 | cmd++; |
87 | ||
81e09ed8 SC |
88 | if (arch->arch == bfd_arch_m68hc11) |
89 | dev_list = dev_list_68hc11; | |
90 | else | |
91 | dev_list = dev_list_68hc12; | |
92 | ||
e0709f50 AC |
93 | for (i = 0; dev_list[i].name; i++) |
94 | if (strcmp (cmd, dev_list[i].name) == 0) | |
95 | break; | |
96 | ||
97 | if (dev_list[i].name == 0) | |
98 | { | |
99 | sim_io_eprintf (sd, "Device '%s' not found.\n", cmd); | |
100 | sim_io_eprintf (sd, "Valid devices: cpu timer sio eeprom\n"); | |
101 | return; | |
102 | } | |
103 | hw_dev = sim_hw_parse (sd, dev_list[i].device); | |
104 | if (hw_dev == 0) | |
105 | { | |
106 | sim_io_eprintf (sd, "Device '%s' not found\n", dev_list[i].device); | |
107 | return; | |
108 | } | |
109 | hw_ioctl (hw_dev, 23, 0); | |
110 | return; | |
111 | } | |
112 | ||
e0709f50 AC |
113 | cpu_info (sd, cpu); |
114 | interrupts_info (sd, &cpu->cpu_interrupts); | |
115 | } | |
116 | ||
117 | ||
118 | void | |
119 | sim_board_reset (SIM_DESC sd) | |
120 | { | |
121 | struct hw *hw_cpu; | |
122 | sim_cpu *cpu; | |
81e09ed8 SC |
123 | const struct bfd_arch_info *arch; |
124 | const char *cpu_type; | |
e0709f50 AC |
125 | |
126 | cpu = STATE_CPU (sd, 0); | |
81e09ed8 SC |
127 | arch = STATE_ARCHITECTURE (sd); |
128 | ||
e0709f50 | 129 | /* hw_cpu = sim_hw_parse (sd, "/"); */ |
81e09ed8 SC |
130 | if (arch->arch == bfd_arch_m68hc11) |
131 | { | |
132 | cpu->cpu_type = CPU_M6811; | |
133 | cpu_type = "/m68hc11"; | |
134 | } | |
135 | else | |
136 | { | |
137 | cpu->cpu_type = CPU_M6812; | |
138 | cpu_type = "/m68hc12"; | |
139 | } | |
140 | ||
141 | hw_cpu = sim_hw_parse (sd, cpu_type); | |
e0709f50 AC |
142 | if (hw_cpu == 0) |
143 | { | |
81e09ed8 | 144 | sim_io_eprintf (sd, "%s cpu not found in device tree.", cpu_type); |
e0709f50 AC |
145 | return; |
146 | } | |
147 | ||
148 | cpu_reset (cpu); | |
149 | hw_port_event (hw_cpu, 3, 0); | |
150 | cpu_restart (cpu); | |
151 | } | |
152 | ||
39762100 | 153 | static int |
81e09ed8 SC |
154 | sim_hw_configure (SIM_DESC sd) |
155 | { | |
156 | const struct bfd_arch_info *arch; | |
157 | struct hw *device_tree; | |
81e09ed8 SC |
158 | sim_cpu *cpu; |
159 | ||
160 | arch = STATE_ARCHITECTURE (sd); | |
161 | if (arch == 0) | |
162 | return 0; | |
163 | ||
164 | cpu = STATE_CPU (sd, 0); | |
165 | cpu->cpu_configured_arch = arch; | |
166 | device_tree = sim_hw_parse (sd, "/"); | |
167 | if (arch->arch == bfd_arch_m68hc11) | |
168 | { | |
169 | cpu->cpu_interpretor = cpu_interp_m6811; | |
170 | if (hw_tree_find_property (device_tree, "/m68hc11/reg") == 0) | |
171 | { | |
172 | /* Allocate core managed memory */ | |
173 | ||
174 | /* the monitor */ | |
175 | sim_do_commandf (sd, "memory region 0x%lx@%d,0x%lx", | |
176 | /* MONITOR_BASE, MONITOR_SIZE */ | |
177 | 0x8000, M6811_RAM_LEVEL, 0x8000); | |
178 | sim_do_commandf (sd, "memory region 0x000@%d,0x8000", | |
179 | M6811_RAM_LEVEL); | |
180 | sim_hw_parse (sd, "/m68hc11/reg 0x1000 0x03F"); | |
77342e5e SC |
181 | if (cpu->bank_start < cpu->bank_end) |
182 | { | |
183 | sim_do_commandf (sd, "memory region 0x%lx@%d,0x100000", | |
184 | cpu->bank_virtual, M6811_RAM_LEVEL); | |
185 | sim_hw_parse (sd, "/m68hc11/use_bank 1"); | |
186 | } | |
81e09ed8 | 187 | } |
77342e5e SC |
188 | if (cpu->cpu_start_mode) |
189 | { | |
190 | sim_hw_parse (sd, "/m68hc11/mode %s", cpu->cpu_start_mode); | |
191 | } | |
81e09ed8 SC |
192 | if (hw_tree_find_property (device_tree, "/m68hc11/m68hc11sio/reg") == 0) |
193 | { | |
194 | sim_hw_parse (sd, "/m68hc11/m68hc11sio/reg 0x2b 0x5"); | |
195 | sim_hw_parse (sd, "/m68hc11/m68hc11sio/backend stdio"); | |
196 | sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/m68hc11sio"); | |
197 | } | |
198 | if (hw_tree_find_property (device_tree, "/m68hc11/m68hc11tim/reg") == 0) | |
199 | { | |
200 | /* M68hc11 Timer configuration. */ | |
201 | sim_hw_parse (sd, "/m68hc11/m68hc11tim/reg 0x1b 0x5"); | |
202 | sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/m68hc11tim"); | |
827ec39a | 203 | sim_hw_parse (sd, "/m68hc11 > capture capture /m68hc11/m68hc11tim"); |
81e09ed8 SC |
204 | } |
205 | ||
206 | /* Create the SPI device. */ | |
207 | if (hw_tree_find_property (device_tree, "/m68hc11/m68hc11spi/reg") == 0) | |
208 | { | |
209 | sim_hw_parse (sd, "/m68hc11/m68hc11spi/reg 0x28 0x3"); | |
210 | sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/m68hc11spi"); | |
211 | } | |
212 | if (hw_tree_find_property (device_tree, "/m68hc11/nvram/reg") == 0) | |
213 | { | |
214 | /* M68hc11 persistent ram configuration. */ | |
215 | sim_hw_parse (sd, "/m68hc11/nvram/reg 0x0 256"); | |
216 | sim_hw_parse (sd, "/m68hc11/nvram/file m68hc11.ram"); | |
217 | sim_hw_parse (sd, "/m68hc11/nvram/mode save-modified"); | |
218 | /*sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/pram"); */ | |
219 | } | |
220 | if (hw_tree_find_property (device_tree, "/m68hc11/m68hc11eepr/reg") == 0) | |
221 | { | |
222 | sim_hw_parse (sd, "/m68hc11/m68hc11eepr/reg 0xb000 512"); | |
223 | sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/m68hc11eepr"); | |
224 | } | |
dcceded2 SC |
225 | sim_hw_parse (sd, "/m68hc11 > port-a cpu-write-port /m68hc11"); |
226 | sim_hw_parse (sd, "/m68hc11 > port-b cpu-write-port /m68hc11"); | |
227 | sim_hw_parse (sd, "/m68hc11 > port-c cpu-write-port /m68hc11"); | |
228 | sim_hw_parse (sd, "/m68hc11 > port-d cpu-write-port /m68hc11"); | |
827ec39a | 229 | cpu->hw_cpu = sim_hw_parse (sd, "/m68hc11"); |
81e09ed8 SC |
230 | } |
231 | else | |
232 | { | |
233 | cpu->cpu_interpretor = cpu_interp_m6812; | |
234 | if (hw_tree_find_property (device_tree, "/m68hc12/reg") == 0) | |
235 | { | |
236 | /* Allocate core external memory. */ | |
237 | sim_do_commandf (sd, "memory region 0x%lx@%d,0x%lx", | |
77342e5e | 238 | 0x8000, M6811_RAM_LEVEL, 0x8000); |
81e09ed8 SC |
239 | sim_do_commandf (sd, "memory region 0x000@%d,0x8000", |
240 | M6811_RAM_LEVEL); | |
77342e5e SC |
241 | if (cpu->bank_start < cpu->bank_end) |
242 | { | |
243 | sim_do_commandf (sd, "memory region 0x%lx@%d,0x100000", | |
244 | cpu->bank_virtual, M6811_RAM_LEVEL); | |
245 | sim_hw_parse (sd, "/m68hc12/use_bank 1"); | |
246 | } | |
81e09ed8 SC |
247 | sim_hw_parse (sd, "/m68hc12/reg 0x0 0x3FF"); |
248 | } | |
249 | ||
250 | if (!hw_tree_find_property (device_tree, "/m68hc12/m68hc12sio@1/reg")) | |
251 | { | |
252 | sim_hw_parse (sd, "/m68hc12/m68hc12sio@1/reg 0xC0 0x8"); | |
253 | sim_hw_parse (sd, "/m68hc12/m68hc12sio@1/backend stdio"); | |
254 | sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12sio@1"); | |
255 | } | |
81e09ed8 SC |
256 | if (hw_tree_find_property (device_tree, "/m68hc12/m68hc12tim/reg") == 0) |
257 | { | |
258 | /* M68hc11 Timer configuration. */ | |
259 | sim_hw_parse (sd, "/m68hc12/m68hc12tim/reg 0x1b 0x5"); | |
260 | sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12tim"); | |
dcceded2 | 261 | sim_hw_parse (sd, "/m68hc12 > capture capture /m68hc12/m68hc12tim"); |
81e09ed8 SC |
262 | } |
263 | ||
264 | /* Create the SPI device. */ | |
265 | if (hw_tree_find_property (device_tree, "/m68hc12/m68hc12spi/reg") == 0) | |
266 | { | |
267 | sim_hw_parse (sd, "/m68hc12/m68hc12spi/reg 0x28 0x3"); | |
268 | sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12spi"); | |
269 | } | |
270 | if (hw_tree_find_property (device_tree, "/m68hc12/nvram/reg") == 0) | |
271 | { | |
272 | /* M68hc11 persistent ram configuration. */ | |
273 | sim_hw_parse (sd, "/m68hc12/nvram/reg 0x2000 8192"); | |
274 | sim_hw_parse (sd, "/m68hc12/nvram/file m68hc12.ram"); | |
275 | sim_hw_parse (sd, "/m68hc12/nvram/mode save-modified"); | |
276 | } | |
277 | if (hw_tree_find_property (device_tree, "/m68hc12/m68hc12eepr/reg") == 0) | |
278 | { | |
279 | sim_hw_parse (sd, "/m68hc12/m68hc12eepr/reg 0x0800 2048"); | |
280 | sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12eepr"); | |
281 | } | |
827ec39a | 282 | |
dcceded2 SC |
283 | sim_hw_parse (sd, "/m68hc12 > port-a cpu-write-port /m68hc12"); |
284 | sim_hw_parse (sd, "/m68hc12 > port-b cpu-write-port /m68hc12"); | |
285 | sim_hw_parse (sd, "/m68hc12 > port-c cpu-write-port /m68hc12"); | |
286 | sim_hw_parse (sd, "/m68hc12 > port-d cpu-write-port /m68hc12"); | |
827ec39a | 287 | cpu->hw_cpu = sim_hw_parse (sd, "/m68hc12"); |
81e09ed8 | 288 | } |
39762100 | 289 | return 1; |
81e09ed8 SC |
290 | } |
291 | ||
77342e5e SC |
292 | /* Get the memory bank parameters by looking at the global symbols |
293 | defined by the linker. */ | |
81e09ed8 | 294 | static int |
77342e5e | 295 | sim_get_bank_parameters (SIM_DESC sd, bfd* abfd) |
81e09ed8 SC |
296 | { |
297 | sim_cpu *cpu; | |
77342e5e SC |
298 | long symsize; |
299 | long symbol_count, i; | |
300 | unsigned size; | |
301 | asymbol** asymbols; | |
302 | asymbol** current; | |
81e09ed8 SC |
303 | |
304 | cpu = STATE_CPU (sd, 0); | |
305 | ||
77342e5e SC |
306 | symsize = bfd_get_symtab_upper_bound (abfd); |
307 | if (symsize < 0) | |
308 | { | |
309 | sim_io_eprintf (sd, "Cannot read symbols of program"); | |
310 | return 0; | |
311 | } | |
312 | asymbols = (asymbol **) xmalloc (symsize); | |
313 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); | |
314 | if (symbol_count < 0) | |
315 | { | |
316 | sim_io_eprintf (sd, "Cannot read symbols of program"); | |
317 | return 0; | |
318 | } | |
319 | ||
320 | size = 0; | |
321 | for (i = 0, current = asymbols; i < symbol_count; i++, current++) | |
322 | { | |
323 | const char* name = bfd_asymbol_name (*current); | |
324 | ||
325 | if (strcmp (name, BFD_M68HC11_BANK_START_NAME) == 0) | |
326 | { | |
327 | cpu->bank_start = bfd_asymbol_value (*current); | |
328 | } | |
329 | else if (strcmp (name, BFD_M68HC11_BANK_SIZE_NAME) == 0) | |
330 | { | |
331 | size = bfd_asymbol_value (*current); | |
332 | } | |
333 | else if (strcmp (name, BFD_M68HC11_BANK_VIRTUAL_NAME) == 0) | |
334 | { | |
335 | cpu->bank_virtual = bfd_asymbol_value (*current); | |
336 | } | |
337 | } | |
338 | free (asymbols); | |
339 | ||
340 | cpu->bank_end = cpu->bank_start + size; | |
341 | cpu->bank_shift = 0; | |
342 | for (; size > 1; size >>= 1) | |
343 | cpu->bank_shift++; | |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
348 | static int | |
349 | sim_prepare_for_program (SIM_DESC sd, bfd* abfd) | |
350 | { | |
351 | sim_cpu *cpu; | |
352 | int elf_flags = 0; | |
353 | ||
354 | cpu = STATE_CPU (sd, 0); | |
39762100 | 355 | |
81e09ed8 SC |
356 | if (abfd != NULL) |
357 | { | |
31c7c532 | 358 | asection *s; |
77342e5e SC |
359 | |
360 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) | |
361 | elf_flags = elf_elfheader (abfd)->e_flags; | |
362 | ||
81e09ed8 | 363 | cpu->cpu_elf_start = bfd_get_start_address (abfd); |
31c7c532 SC |
364 | /* See if any section sets the reset address */ |
365 | cpu->cpu_use_elf_start = 1; | |
366 | for (s = abfd->sections; s && cpu->cpu_use_elf_start; s = s->next) | |
367 | { | |
368 | if (s->flags & SEC_LOAD) | |
369 | { | |
370 | bfd_size_type size; | |
371 | ||
84b11e2e | 372 | size = bfd_get_section_size (s); |
31c7c532 SC |
373 | if (size > 0) |
374 | { | |
375 | bfd_vma lma; | |
376 | ||
377 | if (STATE_LOAD_AT_LMA_P (sd)) | |
378 | lma = bfd_section_lma (abfd, s); | |
379 | else | |
380 | lma = bfd_section_vma (abfd, s); | |
381 | ||
382 | if (lma <= 0xFFFE && lma+size >= 0x10000) | |
383 | cpu->cpu_use_elf_start = 0; | |
384 | } | |
385 | } | |
386 | } | |
77342e5e SC |
387 | |
388 | if (elf_flags & E_M68HC12_BANKS) | |
389 | { | |
390 | if (sim_get_bank_parameters (sd, abfd) != 0) | |
391 | sim_io_eprintf (sd, "Memory bank parameters are not initialized\n"); | |
392 | } | |
81e09ed8 SC |
393 | } |
394 | ||
77342e5e SC |
395 | if (!sim_hw_configure (sd)) |
396 | return SIM_RC_FAIL; | |
397 | ||
81e09ed8 SC |
398 | /* reset all state information */ |
399 | sim_board_reset (sd); | |
400 | ||
401 | return SIM_RC_OK; | |
402 | } | |
403 | ||
bea3f671 MF |
404 | static sim_cia |
405 | m68hc11_pc_get (sim_cpu *cpu) | |
406 | { | |
407 | return cpu_get_pc (cpu); | |
408 | } | |
409 | ||
410 | static void | |
411 | m68hc11_pc_set (sim_cpu *cpu, sim_cia pc) | |
412 | { | |
413 | cpu_set_pc (cpu, pc); | |
414 | } | |
415 | ||
e1211e55 MF |
416 | static int m68hc11_reg_fetch (SIM_CPU *, int, unsigned char *, int); |
417 | static int m68hc11_reg_store (SIM_CPU *, int, unsigned char *, int); | |
418 | ||
e0709f50 AC |
419 | SIM_DESC |
420 | sim_open (SIM_OPEN_KIND kind, host_callback *callback, | |
2e3d4f4d | 421 | bfd *abfd, char * const *argv) |
e0709f50 | 422 | { |
bea3f671 | 423 | int i; |
e0709f50 AC |
424 | SIM_DESC sd; |
425 | sim_cpu *cpu; | |
e0709f50 AC |
426 | |
427 | sd = sim_state_alloc (kind, callback); | |
e0709f50 AC |
428 | |
429 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
430 | ||
bea3f671 MF |
431 | /* The cpu data is kept in a separately allocated chunk of memory. */ |
432 | if (sim_cpu_alloc_all (sd, 1, /*cgen_cpu_max_extra_bytes ()*/0) != SIM_RC_OK) | |
433 | { | |
434 | free_state (sd); | |
435 | return 0; | |
436 | } | |
437 | ||
438 | cpu = STATE_CPU (sd, 0); | |
439 | ||
e0709f50 AC |
440 | cpu_initialize (sd, cpu); |
441 | ||
e0709f50 | 442 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) |
81e09ed8 SC |
443 | { |
444 | free_state (sd); | |
445 | return 0; | |
446 | } | |
e0709f50 | 447 | |
77cf2ef5 | 448 | /* The parser will print an error message for us, so we silently return. */ |
e0709f50 AC |
449 | if (sim_parse_args (sd, argv) != SIM_RC_OK) |
450 | { | |
451 | /* Uninstall the modules to avoid memory leaks, | |
452 | file descriptor leaks, etc. */ | |
81e09ed8 | 453 | free_state (sd); |
e0709f50 AC |
454 | return 0; |
455 | } | |
456 | ||
e0709f50 AC |
457 | /* Check for/establish the a reference program image. */ |
458 | if (sim_analyze_program (sd, | |
459 | (STATE_PROG_ARGV (sd) != NULL | |
460 | ? *STATE_PROG_ARGV (sd) | |
461 | : NULL), abfd) != SIM_RC_OK) | |
462 | { | |
81e09ed8 | 463 | free_state (sd); |
e0709f50 AC |
464 | return 0; |
465 | } | |
466 | ||
467 | /* Establish any remaining configuration options. */ | |
468 | if (sim_config (sd) != SIM_RC_OK) | |
469 | { | |
81e09ed8 | 470 | free_state (sd); |
e0709f50 AC |
471 | return 0; |
472 | } | |
473 | ||
474 | if (sim_post_argv_init (sd) != SIM_RC_OK) | |
475 | { | |
476 | /* Uninstall the modules to avoid memory leaks, | |
477 | file descriptor leaks, etc. */ | |
81e09ed8 | 478 | free_state (sd); |
e0709f50 AC |
479 | return 0; |
480 | } | |
77342e5e SC |
481 | if (sim_prepare_for_program (sd, abfd) != SIM_RC_OK) |
482 | { | |
483 | free_state (sd); | |
484 | return 0; | |
485 | } | |
e0709f50 | 486 | |
bea3f671 MF |
487 | /* CPU specific initialization. */ |
488 | for (i = 0; i < MAX_NR_PROCESSORS; ++i) | |
489 | { | |
490 | SIM_CPU *cpu = STATE_CPU (sd, i); | |
491 | ||
e1211e55 MF |
492 | CPU_REG_FETCH (cpu) = m68hc11_reg_fetch; |
493 | CPU_REG_STORE (cpu) = m68hc11_reg_store; | |
bea3f671 MF |
494 | CPU_PC_FETCH (cpu) = m68hc11_pc_get; |
495 | CPU_PC_STORE (cpu) = m68hc11_pc_set; | |
496 | } | |
497 | ||
e0709f50 AC |
498 | return sd; |
499 | } | |
500 | ||
e0709f50 AC |
501 | /* Generic implementation of sim_engine_run that works within the |
502 | sim_engine setjmp/longjmp framework. */ | |
503 | ||
504 | void | |
505 | sim_engine_run (SIM_DESC sd, | |
506 | int next_cpu_nr, /* ignore */ | |
507 | int nr_cpus, /* ignore */ | |
508 | int siggnal) /* ignore */ | |
509 | { | |
510 | sim_cpu *cpu; | |
511 | ||
512 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
513 | cpu = STATE_CPU (sd, 0); | |
514 | while (1) | |
515 | { | |
516 | cpu_single_step (cpu); | |
517 | ||
518 | /* process any events */ | |
519 | if (sim_events_tickn (sd, cpu->cpu_current_cycle)) | |
520 | { | |
521 | sim_events_process (sd); | |
522 | } | |
523 | } | |
524 | } | |
525 | ||
e0709f50 AC |
526 | void |
527 | sim_info (SIM_DESC sd, int verbose) | |
528 | { | |
81e09ed8 SC |
529 | const char *cpu_type; |
530 | const struct bfd_arch_info *arch; | |
531 | ||
00d0c012 SC |
532 | /* Nothing to do if there is no verbose flag set. */ |
533 | if (verbose == 0 && STATE_VERBOSE_P (sd) == 0) | |
534 | return; | |
535 | ||
81e09ed8 SC |
536 | arch = STATE_ARCHITECTURE (sd); |
537 | if (arch->arch == bfd_arch_m68hc11) | |
538 | cpu_type = "68HC11"; | |
539 | else | |
540 | cpu_type = "68HC12"; | |
541 | ||
e0709f50 | 542 | sim_io_eprintf (sd, "Simulator info:\n"); |
81e09ed8 | 543 | sim_io_eprintf (sd, " CPU Motorola %s\n", cpu_type); |
e0709f50 AC |
544 | sim_get_info (sd, 0); |
545 | sim_module_info (sd, verbose || STATE_VERBOSE_P (sd)); | |
546 | } | |
547 | ||
548 | SIM_RC | |
6b4a8935 | 549 | sim_create_inferior (SIM_DESC sd, struct bfd *abfd, |
2e3d4f4d | 550 | char * const *argv, char * const *env) |
e0709f50 | 551 | { |
81e09ed8 | 552 | return sim_prepare_for_program (sd, abfd); |
e0709f50 AC |
553 | } |
554 | ||
e1211e55 MF |
555 | static int |
556 | m68hc11_reg_fetch (SIM_CPU *cpu, int rn, unsigned char *memory, int length) | |
e0709f50 | 557 | { |
e0709f50 | 558 | uint16 val; |
63f36def | 559 | int size = 2; |
e0709f50 | 560 | |
e0709f50 AC |
561 | switch (rn) |
562 | { | |
563 | case A_REGNUM: | |
564 | val = cpu_get_a (cpu); | |
63f36def | 565 | size = 1; |
e0709f50 AC |
566 | break; |
567 | ||
568 | case B_REGNUM: | |
569 | val = cpu_get_b (cpu); | |
63f36def | 570 | size = 1; |
e0709f50 AC |
571 | break; |
572 | ||
573 | case D_REGNUM: | |
574 | val = cpu_get_d (cpu); | |
575 | break; | |
576 | ||
577 | case X_REGNUM: | |
578 | val = cpu_get_x (cpu); | |
579 | break; | |
580 | ||
581 | case Y_REGNUM: | |
582 | val = cpu_get_y (cpu); | |
583 | break; | |
584 | ||
585 | case SP_REGNUM: | |
586 | val = cpu_get_sp (cpu); | |
587 | break; | |
588 | ||
589 | case PC_REGNUM: | |
590 | val = cpu_get_pc (cpu); | |
591 | break; | |
592 | ||
593 | case PSW_REGNUM: | |
594 | val = cpu_get_ccr (cpu); | |
63f36def SC |
595 | size = 1; |
596 | break; | |
597 | ||
598 | case PAGE_REGNUM: | |
599 | val = cpu_get_page (cpu); | |
600 | size = 1; | |
e0709f50 AC |
601 | break; |
602 | ||
e0709f50 | 603 | default: |
9830501b | 604 | val = 0; |
e0709f50 AC |
605 | break; |
606 | } | |
00416c6e SC |
607 | if (size == 1) |
608 | { | |
609 | memory[0] = val; | |
610 | } | |
611 | else | |
612 | { | |
613 | memory[0] = val >> 8; | |
614 | memory[1] = val & 0x0FF; | |
615 | } | |
63f36def | 616 | return size; |
e0709f50 AC |
617 | } |
618 | ||
e1211e55 MF |
619 | static int |
620 | m68hc11_reg_store (SIM_CPU *cpu, int rn, unsigned char *memory, int length) | |
e0709f50 AC |
621 | { |
622 | uint16 val; | |
e0709f50 AC |
623 | |
624 | val = *memory++; | |
625 | if (length == 2) | |
626 | val = (val << 8) | *memory; | |
627 | ||
628 | switch (rn) | |
629 | { | |
630 | case D_REGNUM: | |
631 | cpu_set_d (cpu, val); | |
632 | break; | |
633 | ||
634 | case A_REGNUM: | |
635 | cpu_set_a (cpu, val); | |
63f36def | 636 | return 1; |
e0709f50 AC |
637 | |
638 | case B_REGNUM: | |
639 | cpu_set_b (cpu, val); | |
63f36def | 640 | return 1; |
e0709f50 AC |
641 | |
642 | case X_REGNUM: | |
643 | cpu_set_x (cpu, val); | |
644 | break; | |
645 | ||
646 | case Y_REGNUM: | |
647 | cpu_set_y (cpu, val); | |
648 | break; | |
649 | ||
650 | case SP_REGNUM: | |
651 | cpu_set_sp (cpu, val); | |
652 | break; | |
653 | ||
654 | case PC_REGNUM: | |
655 | cpu_set_pc (cpu, val); | |
656 | break; | |
657 | ||
658 | case PSW_REGNUM: | |
659 | cpu_set_ccr (cpu, val); | |
63f36def SC |
660 | return 1; |
661 | ||
662 | case PAGE_REGNUM: | |
663 | cpu_set_page (cpu, val); | |
664 | return 1; | |
e0709f50 | 665 | |
e0709f50 | 666 | default: |
e0709f50 AC |
667 | break; |
668 | } | |
669 | ||
670 | return 2; | |
671 | } |